we get Waitrose back bacon, sometimes it comes with the tiniest bit of fat so get lots of yummy bacon. Remember you only have to count the bacon weight for a HEx (85g i think) and if it's original its free so you could eat the whole pack (trimmed of course) if you felt so inclined
I generally buy Morrisons back bacon if it's on offer (which is mostly seems to be) and cut the fat off it. I find it leaves a decent amount of meat too. If it's not on offer I get the bacon medallions (Eat Well) which are fatless already.